USPTO Patents Application 09830434

(19)

JAPANESE PATENT OFFICE

PATENT ABSTRACTS OF JAPAN

(11) Publication number 08300252 A
(43) Date of publication of application: 19 . l

(51) Int. CI

B24B 37/00
B24B 1/00
B24B 37/04
B24B 57/02
HOI L 21/304

(21) Application number: 07127391

(71) Applicant:

SONY CORP

(22) Date of filing: 28 . 04 . 95

(72) Inventor:

miyazawa YOSHIHIRO
SUZUKI TOSHIHIKO

(54) abrasive: cloth and grinding machine

AO

(57) Abstract:

PURPOSE: To provide abrasive cloth and a grinding
machine suited to this abrasive cloth, capable of
feeding abrasive surfece with grinding fluid unformly
with a required quantity neither more nor less.

CONSTITUTION: This abrasive cloth 10 consists of a
polyurethane foam grinding fluid content layer 12 of
0.5mm to 3mm in thickness, with an abrasive surface on
an upper surface, and a grinding fluid permeative base
layer 14 of 4mm in thickness. This base layer 14 is
composed of a grinding fluid permeative material in
order to feed the grinding fluid content layer 12 with
the grinding fluid after being permeated from a lower
part of the base layer 14, for example, foaming material
such as polyurethane foam or polystyrene or the like or
nonwoven fabric material. This grinding fluid
permeativeness means a property of permeating the
grinding fluid, and grinding grain size to be contained
in the grinding fluid is a range firom about 0.01 Mm to
several ^m. so that this grinding fluid permeativeness
in the base layer 14 must be grinding permeative
properties to pass through this size of grinding grain size.

COPYRIGHT: {C)1996.JPO

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